No. At the time Arduino switched to the 8u2, FTDI usb/serial chips were relatively expensive. Since that time, FTDI has come out with a cheaper line of USB chips, competition has appeared in the form of Cypress, WCH, and low-priced "modules", and the AVRs have gotten more expensive. On top of that, there are more chips with native USB (like the 32u4 used on Leonardo and Micro, or the SAMD21 on Zero) The 8u2 change to Arduino allowed the older design to have new USB capabilities, but those usually aren't needed. When they are needed, there are better solutions...

Hi guys, like Czetie said I'm new hear and know as much about this stuff as the difference between my elbow & a!. I acquired the "GY-BMP280-3.3 Pressure Atmospheric Altimeter Module Sensor Tool U", pined it up to 4/5 and 5v pins got the bpm280 prog loaded up on my unoR3 opened serial monitor and off it went, fast ! but with the odd number a load of reverse question marks and the odd letter, question is, what have I done wrong, I'm using a iMac.Help is alway very welcome guys.